Patent US2774792A successfully refreshed from Google Patents.
US2774792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for drying carbonylic compounds
Assignee: Shell Development Co
•
Filing: 1954-09-03
•
Granted: 1956-12-18
•
Expires: 1974-09-03
Abstract
No abstract record available.
Inventors
- 👤 George J Carlson
- 👤 George W Gaertner
- 👤 Frank B West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:11
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/78; C07C45/85
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A METHOD OF DRYING A LOWER MOLECULAR WEIGHT, NORMALLY LIQUID, MONOCARBONYL-SUBSTITUTED HYDROCARBON WHICH COMPRISES CONTACTING SAID CARBONYL COMPOUND WITH AN ALUMINUM ALCOHOLATE OF A MONOHYDROXY-SUBSTITUTED HYDROCARBON ALCOHOL HAVING ONE TO TEN CARBON ATOMS PER MOLECULE IN AN AMOUNT BETWEEN ABOUT THE STOICHIOMETRIC REQUIREMENT FOR REACTION WITH THE WATER PRESENT TO FORM ALUMINUM HYDROXIDE AND AN EXCESS OVER SUCH STOICHIOMETRIC AMOUNT NOT GREATER THAN 0.02 MOLE PER MOLE OF CARBONYL-SUBSTITUTED HYDROCARBON AT A TEMPERATURE OF ABOUT 0* C. TO 45* C. WHEREBY REACTION OF THE ALUMINUM ALCOHOLATE WITH THE WATER TAKES PLACE AND ALUMINUM HYDROXIDE IS FORMED WITHOUT SUBSTANTIAL CONVERSION OF SAID CARBONYLIC HYDROCARBON.
Claim 2
Independent Claim
103 words
A METHOD OF DRYING A LOWER MOLECULAR WEIGHT, NORMALLY LIQUID, MONOCARBONYL-SUBSTITUTED HYDROCARBON WHICH COMPRISES CONTACTING SAID CARBONYL COMPOUND WITH AN ALUMINUM ALCOHOLATE OF A MONOHYDROXY-SUBSTITUTED HYDROCARBON ALCOHOL HAVING ONE TO TEN CARBON ATOMS PER MOLECULE IN AN AMOUNT BETWEEN ABOUT THE STOICHIOMETRIC REQUIREMENT FOR REACTION WITH THE WATER PRESENT TO FORM ALUMINUM HYDROXIDE AND AN EXCESS OVER SUCH STOICHIOMETRIC AMOUNT NOT GREATER THAN 0.02 MOLE PER MOLE OF CARBONYL-SUBSTITUTED HYDROCARBON AT A TEMPERATURE OF ABOUT 0* C. TO 45* C. WHEREBY REACTION OF THE ALUMINUM ALCOHOLATE WITH THE WATER TAKES PLACE AND ALUMINUM HYDROXIDE IS FORMED WITHOUT SUBSTANTIAL CONVERSION OF SAID CARBONYLIC HYDROCARBON.
References Cited (Backward Citations)
GB191326826A
Cited
US2516627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |